Power axle wrist for robotic surgical tool
First Claim
1. A surgical tool, comprising:
- a drive housing;
an elongate shaft that extends from the drive housing;
a wrist that couples an end effector to the elongate shaft and includes a distal clevis that defines an inner pulley and has a first axle that rotatably mounts the end effector to the distal clevis, and a proximal clevis coupled to a distal end of the elongate shaft and having a second axle that rotatably mounts the distal clevis to the proximal clevis;
a plurality of drive cables extending between the drive housing and the end effector, wherein movement of one or more of the plurality of drive cables causes the end effector to articulate about a first pivot axis extending through the first axle; and
a power axle cable extending from the drive housing and mounted to the distal clevis at the inner pulley,wherein a power axle connector is secured to the power axle cable and received within a pocket defined in the distal clevis such that movement of the power axle cable correspondingly pivots the end effector about a second pivot axis extending through the second axle and perpendicular to the first pivot axis, andwherein a portion of the power axle connector protrudes from the pocket and a recess is defined on the end effector to accommodate the portion of the power axle connector such that the power axle connector does not obstruct movement of the end effector about the first pivot axis.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical tool includes a drive housing and an elongate shaft extending from the drive housing. A wrist couples an end effector to the elongate shaft and includes a distal clevis having a first axle that rotatably mounts the end effector to the distal clevis, and a proximal clevis coupled to the elongate shaft and having a second axle that rotatably mounts the distal clevis to the proximal clevis. A plurality of drive cables extend between the drive housing and the end effector, and movement of the drive cables causes the end effector to articulate about a first pivot axis extending through the first axle. A power axle cable extending from the drive housing and mounted to the distal clevis such that movement of the power axle cable correspondingly pivots the end effector about a second pivot axis at the second axle.
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Citations
19 Claims
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1. A surgical tool, comprising:
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a drive housing; an elongate shaft that extends from the drive housing; a wrist that couples an end effector to the elongate shaft and includes a distal clevis that defines an inner pulley and has a first axle that rotatably mounts the end effector to the distal clevis, and a proximal clevis coupled to a distal end of the elongate shaft and having a second axle that rotatably mounts the distal clevis to the proximal clevis; a plurality of drive cables extending between the drive housing and the end effector, wherein movement of one or more of the plurality of drive cables causes the end effector to articulate about a first pivot axis extending through the first axle; and a power axle cable extending from the drive housing and mounted to the distal clevis at the inner pulley, wherein a power axle connector is secured to the power axle cable and received within a pocket defined in the distal clevis such that movement of the power axle cable correspondingly pivots the end effector about a second pivot axis extending through the second axle and perpendicular to the first pivot axis, and wherein a portion of the power axle connector protrudes from the pocket and a recess is defined on the end effector to accommodate the portion of the power axle connector such that the power axle connector does not obstruct movement of the end effector about the first pivot axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power axle wrist for a surgical tool that couples an end effector to an elongate shaft of the surgical tool, the power axle wrist comprising:
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a distal clevis having a first axle where the end effector is rotatably mounted to the distal clevis, the end effector being articulable about a first pivot axis extending through the first axle; a proximal clevis configured to be coupled to a distal end of the elongate shaft and having a second axle where the distal clevis is rotatably mounted to the proximal clevis; a power axle cable mounted to the distal clevis at an inner pulley, the proximal clevis defining a plurality of channels through which a plurality of drive cables and the power axle cable extend; and a power axle connector secured to the power axle cable and received within a pocket defined in the distal clevis such that movement of the power axle cable correspondingly pivots the end effector about a second pivot axis extending through the second axle and perpendicular to the first pivot axis, wherein a portion of the power axle connector protrudes from the pocket and a recess is defined on the end effector to accommodate the portion of the power axle connector such that the power axle connector does not obstruct movement of the end effector about the first pivot axis. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of operating a surgical tool, comprising:
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positioning the surgical tool adjacent a patient for operation, the surgical tool including; a drive housing; an elongate shaft extending from the drive housing; a wrist that couples an end effector to the elongate shaft and includes a distal clevis that defines an inner pulley and has a first axle that rotatably mounts the end effector to the distal clevis, and a proximal clevis coupled to a distal end of the elongate shaft and having a second axle that rotatably mounts the distal clevis to the proximal clevis; a plurality of drive cables extending between the drive housing and the end effector; and a power axle cable extending from the drive housing and mounted to the distal clevis at the inner pulley, wherein a power axle connector is secured to the power axle cable and received within a pocket defined in the distal clevis; moving one or more of the plurality of drive cables to articulate the end effector about a first pivot axis extending through the first axle; and moving the power axle cable and thereby pivoting the end effector about a second pivot axis extending through the second axle and perpendicular to the first pivot axis, wherein a portion of the power axle connector protrudes from the pocket and a recess is defined on the end effector to accommodate the portion of the power axle connector such that the power axle connector does not obstruct movement of the end effector about the first pivot axis. - View Dependent Claims (18, 19)
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Specification